1421266169 has 8 divisors (see below), whose sum is σ = 1440240000. Its totient is φ = 1402317072.

The previous prime is 1421266141. The next prime is 1421266219. The reversal of 1421266169 is 9616621241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421266169 is a prime.

It is a super-2 number, since 2×1421266169² = 4039995046287873122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421266129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128927 + ... + 139515.

It is an arithmetic number, because the mean of its divisors is an integer number (180030000).

Almost surely, 2^1421266169 is an apocalyptic number.

It is an amenable number.

1421266169 is a deficient number, since it is larger than the sum of its proper divisors (18973831).

1421266169 is a wasteful number, since it uses less digits than its factorization.

1421266169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367.

The product of its digits is 31104, while the sum is 38.

The square root of 1421266169 is about 37699.6839376672. The cubic root of 1421266169 is about 1124.3248410467.

The spelling of 1421266169 in words is "one billion, four hundred twenty-one million, two hundred sixty-six thousand, one hundred sixty-nine".